@article{410567,
      author = {Coelli, Tim.},
      url = {http://library.usi.edu/record/410567},
      title = {A primer on efficiency measurement for utilities and  transport regulators/},
      publisher = {World Bank,},
      recid = {410567},
      pages = {xii, 134 p. :},
      address = {Washington, D.C. :},
      year = {2003},
}